Specifications

Chapter 8: DINR 67
With a Selection: Clicking these buttons moves
a selected breakpoint or breakpoints up, down,
right, or left. If there is currently a selection in
the Spectral Graph, clicking the left and right ar-
row buttons will move the selected breakpoints
left or right. The Up and Down arrows will move
the selected breakpoints up or down, respec-
tively. Control-Option-clicking (Macintosh) or
Alt-Start key-clicking (Windows) the Arrow keys
on your computer keyboard performs the same
function.
Undo
Clicking the Undo button undoes the last edit to
the Spectral Graph Display. The Undo button
does not undo changes made to slider positions.
Using Broadband Noise
Reduction
Before you start using BNR, take a moment to
think about the nature of the noise in your ses-
sion and where it’s located: Is it on a single
track, or several tracks? Is it a single type of
noise, or several different types? The answers to
these questions will affect how you use BNR.
If there is a single type of broadband noise on a
single track, insert the BNR plug-in onto the
track. Solo the track to make it easier hear as you
remove the noise. If a single track contains dif-
ferent types of noise, you may need to use more
than one DINR insert to remove the other types
of noise. If multiple tracks contain the same
noise, you may want to bus them all to an Aux-
iliary Input so you can use a single DINR plug-in
insert. This will minimize the amount of DSP
you use.
To use Broadband Noise Reduction:
1 From the Insert pop-up on the track with the
noise and select BNR. The Broadband Noise Re-
duction window appears.
2 In the Edit window, select the noisiest portion
of the track—ideally, a segment with as little of
the desired signal as possible. This will make it
easier for BNR to accurately model the noise. If
the track contains a segment comprised of noise
only, select that portion.
3 Start audio playback, and in the Broadband
Noise Reduction window, click the Learn but-
ton. BNR samples the first 16 milliseconds of the
selected audio and creates its noise signature.
– or –
Locate and identify noise on the fly, during
playback, using BNR’s Learn Last Audio mode.
To do this, Option-click (Macintosh) or Alt-click
(Windows) the Learn button. Begin playback,
and when you hear the segment that you want
DINR to sample as noise, click Learn a second
time. BNR will build a noise signature based on
the 16 milliseconds of audio immediately pre-
ceding the second click.
4 Click Fit. BNR will fit a Contour Line to the
noise signature just created. If you want to cre-
ate a Contour Line that follows the noise signa-
ture even more precisely, click the Super Fit
button. A Contour Line with five hundred
breakpoints is created.
5 To audition the effects of the noise reduction
interactively, in the Edit window, select a por-
tion of audio containing the noise. Then select
Loop Playback from Pro Tools’ Options menu
and press the Spacebar to begin looped audio
playback.
Undo